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// +build !windows
package layer
import (
"testing"
)
func graphDiffSize(ls Store, l Layer) (int64, error) {
cl := getCachedLayer(l)
var parent string
if cl.parent != nil {
parent = cl.parent.cacheID
}
return ls.(*layerStore).driver.DiffSize(cl.cacheID, parent)
}
// Unix as Windows graph driver does not support Changes which is indirectly
// invoked by calling DiffSize on the driver
func TestLayerSize(t *testing.T) {
ls, _, cleanup := newTestStore(t)
defer cleanup()
content1 := []byte("Base contents")
content2 := []byte("Added contents")
layer1, err := createLayer(ls, "", initWithFiles(newTestFile("file1", content1, 0644)))
if err != nil {
t.Fatal(err)
}
layer2, err := createLayer(ls, layer1.ChainID(), initWithFiles(newTestFile("file2", content2, 0644)))
if err != nil {
t.Fatal(err)
}
layer1DiffSize, err := graphDiffSize(ls, layer1)
if err != nil {
t.Fatal(err)
}
if int(layer1DiffSize) != len(content1) {
t.Fatalf("Unexpected diff size %d, expected %d", layer1DiffSize, len(content1))
}
layer1Size, err := layer1.Size()
if err != nil {
t.Fatal(err)
}
if expected := len(content1); int(layer1Size) != expected {
t.Fatalf("Unexpected size %d, expected %d", layer1Size, expected)
}
layer2DiffSize, err := graphDiffSize(ls, layer2)
if err != nil {
t.Fatal(err)
}
if int(layer2DiffSize) != len(content2) {
t.Fatalf("Unexpected diff size %d, expected %d", layer2DiffSize, len(content2))
}
layer2Size, err := layer2.Size()
if err != nil {
t.Fatal(err)
}
if expected := len(content1) + len(content2); int(layer2Size) != expected {
t.Fatalf("Unexpected size %d, expected %d", layer2Size, expected)
}
}
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